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Cited by 0Innovative concrete reinforcement materialsHygrothermal properties of building materialsNatural Fiber Reinforced Composites

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Thermal and Mechanical Properties of Natural Fiber/Concrete Composites for Sustainable Building Applications

Open access
Chan, Wing-Yu, Ng, Sun-Pui, Loh, Wai-Keung Anthony, Chau, Chun-Pong, Wong, Chi-Ho Roy, Dong, You, Lam, King-Cheong·2026·Journal of Natural Fibers
DOI 10.1080/15440478.2026.2731518
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Abstract

This study evaluates the thermal insulation, thermal stability, and mechanical properties of concrete containing six types of natural fibers such as bamboo, flax, palm, chicken feathers, wool and silk at various weight percentages (2.5, 5, and 10 wt%). The thermal properties of the composites were determined by their thermal conductivity along with tensile strength, compressive strength, SEM, FTIR and TGA. It is observed that an increase in the percentage of natural fibers greatly decreased the thermal conductivity, where the 10 wt% bamboo and 10 wt% chicken feathers had thermal conductivities of 0.034 W/mK and 0.062 W/mK, respectively, whereas the thermal conductivity of plain concrete is found to be 1.086 W/mK. The chicken feather/concrete composite has maximum tensile strength of 7.26 MPa at 5 wt% and compressive strength of 86.72 MPa at 10 wt%, which is an improvement of 201% and 57.7% over the strength of plain concrete. From the SEM analysis that the chicken feather, silk and palm fibers showed good fiber-matrix interaction, and FTIR analysis supported the changes in structure and hydrogen bonding after fracture. Regarding the TGA results, flax/concrete composites have the highest thermal stability, while chicken feather composites experienced the highest mass loss at high temperatures.

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References 63

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Metadata

Authors
Chan, W.-Y., Ng, S.-P., Loh, W.-K. A., Chau, C.-P., Wong, C.-H. R., Dong, Y., & Lam, K.-C.
Affiliations
Hong Kong Polytechnic University (HK)
Corresponding author
Lam, King-Cheong
ORCID
Venue
Journal of Natural Fibers
Publisher
Informa UK Limited
Published
2026-09-27
Volume
23
Issue
1
ISSN
  • 1544-046X (ISSN-L)
  • 1544-0478
DOI
10.1080/15440478.2026.2731518
OpenAlex
W7214541332
Cited by
0
References
63
FWCI
0.00
Type
journal article
Language
en
Open access
Licence
Locations
  • Journal of Natural Fibers (publishedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • Koo Meng Li and Koo Mi Wen Na Charitable Foundation Limited (KML/2023/003)
  • PolyU CPCE Division of Science, Engineering, and Health Studies
Topics
  • Physical Sciences › Engineering › Civil and Structural Engineering › Innovative concrete reinforcement materials
  • Physical Sciences › Engineering › Building and Construction › Hygrothermal properties of building materials
  • Physical Sciences › Materials Science › Polymers and Plastics › Natural Fiber Reinforced Composites
Keywords
natural fiber reinforced concrete, thermal insulation, thermal conductivity, thermal stability, tensile strength, compressive strength, bamboo fiber, flax fiber, palm fiber, chicken feather fiber, wool fibers, silk fibers, fiber-matrix interaction, sustainable construction materials

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